Spring-power motor for working sewing and other small machines



(No Model.) 2 Sheets-Sheet 1.

. T. H. BALDWIN. Spring Power Motor for Working Sewing and Other SmallMachines.

No. 240,944. Patented May 3,1881.

WITNES$ES= INVENTOR ATTORNEYS.

N. PETERS, Fhoto-Lilhogmpher. Washington. D. C.

(No Model.) '2-sneets -sneen2.

' T. H. BALDWIN.-

Spring Power Motorvfor Working Sewing and Other Small Machines.

INVENTOR 2 W Ja/M ATTORNEYS WITN TINTTED STATES PATENT OFFICE.

TRUMAN H. BALDWIN, OF BARABOO, WISCONSIN.

SPRING-POWER MOTOR FOR WORKING SEWING AND OTHER SMALL MACHINES.

SPECIFICATION forming part of Letters Patent No. 240,944, dated May 3,1881.

Application filed December 20, 1880. (No model.)

To all whom it may concern:

Be it known that I, TRUMAN H. BALDWIN, of Baraboo,in the county of Sankand State of Wisconsin,have inventeda new and Improved Spring-Motor; andI do hereby declare that the following is a full, clear, and exactdescription of the same.

The object of my invention is an improvement in the class ofspring-power motors for driving small machines.

Myinvention relates more particularly to an improved spring-motor forsewing-machines; and it consists in the construction and combination ofparts, as hereinafter described and claimed.

In accompanyingdrawings, forming part of this specification, Figure l isan end view of the motor and side view of a sewing-machine head, partbeing broken away. Fig. 2is a plan view of the motor without a treadleattachment. Fig. 3 is a side elevation of the motor provided with thetreadle.

Similar letters refer to similar parts throughout the several views.

The drum A contains a metal spring, F, attached to the center shaft-,0,and to thetoothed or friction-geared periphery of the drum h, in suchmanner that when wound up by means of the handle a, the ratchet d, andthe ratchetwheel E, it causes the toothed wheel h torevolve,thusrevolving the pinion t'and the wheel 0, which is keyed onthe same shaft as i. The wheel 0 revolves the pinion g, which turns thewheel B, which again revolves the pinion 0", which is keyed to thecenter of the wheel D, which connects by this center to thesewingmachine shaft, (marked .9.) The spring Z is attached, by the cordf, to a treadle to be operated by the foot, and acts as a friction-brakeon the wheel D, either reducing or stopping the motion of themachine.The rod kconnects the end of the lever c to another treadle, (notshown,) and is for the purpose of winding up the machine by foot-power.The lever e is also adapted for the use of the hand in winding up.

The metal frame G m, which supports the above parts of the motor proper,is itself supported by posts an, screwed to wooden bars 9 9.

While the motor may be used with various sewing-machines, it is moreparticularlyadapted for the one known as the Domestic. To attach themotor thereto itis placed on the table of the machine and the band-wheelof the latter removed from its journal 8, and the grooved pulley Dsubstituted for it, as shown in Fig. 2. Said wheel D has an extended hubor tubular bearing, on the outer end of which is keyed or otherwisesuitably secured a spurpinion, 1', which meshes with the gear 0 of themotor. The bearing of the wheel D is provided with a clamp-screw, c, forsecuring it to its journals, which is the projecting end of the rotatingshaft thatreciprocates the needle carrier. (Not shown). The wheelDserves asabalance for the sewingmaehine, and being peripherally grooved,as specified, a round belt may be applied to it for windingthread-bobbins.

The motor attachment above described is adapted for imparting abouttwenty thousand revolutions at each winding to the shaft on which thebalance-wheel D is mounted, and the winding maybe eii'ected withcomparative ease by means of the lever.

The motor is compact in form, and may be quickly attached to or detachedfrom the sewing-machine by reason of the construction and mode ofapplying the wheel D, which constitutes an intermediary between thesewing-inachine and motor proper.

I do not, of' course, claim the use or application of a spring or weightmotor for running sewing and other small machines; but

What I do claim is- The wheel I), provided with a pinion,r, andfastening device 0, in combination with the spring-motor, consisting ofthe spring-drum, geared as shown, the spur-wheels B O, pinion "i, theratchet pawls and lever, said wheel being adapted for attachment to thejournal of a sewing-machine shaft, as shown and described.

TRUMAN H. BALDWIN.

Witnesses M. BENTLEY, REUBEN BALDWIN.

